Determination of gold in two Egyptian gold ores using instrumental neutron activation analysis

Magnetomotive room temperature dicationic ionic liquid: A new concept toward centrifuge-less dispersive liquid–liquid microextraction

“…Some analytical techniques are available for determination of trace amounts of Au and Ag in geological and environmental samples such as flame atomic absorption spectrometry (FAAS) [6,7,8,[9][10][11][12], neutron activation [13], spectrophotometry [14], electrochemical methods [15], inductively coupled plasma mass spectrometry (ICP-MS) [16] and electrothermal atomic absorption spectrometry (ETAAS) [17][18][19].…”

Elemental analysis of natural quartz from Um Higlig, Red Sea Aea, Egypt by instrumental neutron activation analysis

“…The major advantage of NAA are (a) the relative freedom from matrix interferences, (b) high accuracy and (c) very low zero blank contributions. Because nuclear reactions and decay processes are virtually unaffected by chemical and physical structure of the material during and after irradiation, the composition of the matrix has little influence on the induced activityand makes INAA a preferred technique (Brodsky, 1986;Zaghloul, and El-Abbady, 1988;Gordus, 1995;Sena et al, 1995;Descantes et al, 2001;Scheid et al, 2009;El-Taher, 2010b;Potts and Rogers 1991;Duffey et al, (1970); El-Taher et al, (2003);El-Taher et al, (2004); Gurna et al, (1990);Montero Cabrera et al, (2000); Senftle et al, (1971) ;Vereijke, (1992). In spite of the large number of papers devoted to INAA, those dealing with quartz are relatively small in number.…”

Determination of Ag, Au, Cu and Zn in ore samples from two Mexican mines by various thermal and epithermal NAA techniques

“…Ore samples have been analyzed to determine Au by conventional thermal NNA [14]. It was reported that the use of epithermal irradiation techniques along with Compton suppression counting yields good results for the detection of Au and Zn through the isotopes 198 Au [5] and 69m Zn [15].…”